In the petrochemical industry, equipment often faces challenges of corrosion and wear, which can lead to equipment failure and subsequently affect production efficiency and safety.
Ultrasonic flame spraying WC-12Co or plasma spraying can be used for repair and strengthening, or arc spraying can be used for repair. The service life of the plunger repaired by thermal spraying technology is higher than that of the surface-quenched plunger, and slightly lower than that of the plunger welded with nickel-based alloy on the working surface. For some large-diameter plungers that cannot be repaired by spray welding due to deformation, thermal spraying is still the best repair method with no deformation and low cost.